I think it’s good to make your kids work.  Your entire purpose is to make sure they can take care of themselves, so they should strive & work & be self sufficient.  You want them to not only live, but flourish after youre gone from this earth.
That said- your purpose is to also not be a dick.   The world is cruel as is, your children should know that in that cruelty, there is always kindness at home.   There is someone there to pick them up when they fall - that never stops.   From their first steps as babies to their first steps of having their own. 

If you do both, your kids will be alright.